Benchmark: Class Accessor vs Method v2

Script Preparation code:

class TestClass {
  
  	propertyName = Math.random();

    get property() {
        return this.propertyName;
    }

    getProperty() {
        return this.propertyName;
    }
};

var prototypeAccessor = new TestClass();

Tests:

Read from method
var value = prototypeAccessor.getProperty();
Read from accecssor
var value = prototypeAccessor.property;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Read from method
Read from accecssor

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36 Edg/110.0.1587.50

Browser/OS: Chrome 110 on Windows

View result in a separate tab

Test name	Executions per second
Read from method	16416031.0 Ops/sec
Read from accecssor	16628805.0 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):

LLMs can make mistakes. Check important info.

Let's break down the benchmark and its test cases.

**Benchmark Definition**
The provided JSON represents a JavaScript microbenchmark that compares the performance of accessing a property through a getter method (`getProperty()`) versus accessing it directly as an accessor (`property`).

**Script Preparation Code**
The script preparation code defines a `TestClass` class with two methods: `getProperty()` and `property`. The `getProperty()` method is a getter that returns the value of `propertyName`, which is set to a random value using `Math.random()`. The `property` accessor directly accesses the value of `propertyName`.

**Options Compared**
The benchmark compares the performance of accessing a property through:

1. A getter method (`getProperty()`)
2. An accessor (`property`)

**Pros and Cons**

* **Getter Method (`getProperty()`):**
	+ Pros: Can be used to implement validation, calculation, or other business logic before returning the value.
	+ Cons: Adds overhead due to function call and potential property lookup.
* **Accessor (`property`):**
	+ Pros: Fast access without function call overhead.
	+ Cons: Does not allow for implementation of additional logic before returning the value.

**Library Usage**
The benchmark uses the `prototype` object, which is a built-in JavaScript feature. The `prototypeAccessor` variable is created by instantiating the `TestClass` class and assigning it to the `prototype` object, effectively making the `property` accessor part of the prototype chain.

**Special JS Feature or Syntax**
There are no special features or syntax mentioned in the benchmark definition or test cases.

**Other Alternatives**
If you wanted to create a similar benchmark, you could consider using other approaches, such as:

* Using an object literal instead of a class for simplicity.
* Adding additional logic to the `getProperty()` method (e.g., calculating the value) and comparing its performance to accessing `propertyName` directly.
* Using different data structures or arrays to compare access times.

Keep in mind that this benchmark is designed specifically to compare the performance of getter methods versus accessors, so it's essential to keep the test cases simple and focused on the specific aspect being measured.

Related benchmarks:

Class Accessor vs Method v2 (version: 0)

Comparing performance of: Read from method vs Read from accecssor

Created: one year ago by: Guest

Jump to the latest result

Read from method

Read from accecssor

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):